Pressure fluid generator



Jan. 17, 1933.

jLRiess H. RIESS PRESSURE FLUID GENERATOR Filed Oct 18, 1926 Jmrenfor 31 %a Patented Jan. 17, 1933 UNETED STATES PATENT OFFICE PRESSURE FLUID GENERATOR Application filed October 18, 1926, Serial No. 142,457, and in Germany October 20, 1925.

This invention relates to pressure fluid generators in which the gas-steam which serves as pressure fluid is generated andboth constituents are, intimately mixed.

Generators of this type which have become known till now have the inconvenience that the steam designed for mixing with the gases from explosion must either be generated in a separate plant or, if it is generated in a water jacket which surrounds the ex plosion chamber, a sufficient quantity of steam is at disposal only after the engine has worked for a relatively long period. Up to that time however the engine will already have been heated very strongly. In both cases it is therefore impossible to utilize gas-steam internal combustion engines.

The construction of the present invention is such that itis possible to generate in the engine a sufficient quantity of steam at the first explosion and to maintain the temperature of the driving fluid from the beginning at so low a degree, that the utilization of explosion engines of this type becomes possible also for motor cars, aircraft and the like.

This object is attained according to the present invention by arranging the injector in a special chamber, and by winding around the nozzles of this injector tubes in spiral shape which terminate in a ring shaped tube located in an evaporating cup and having discharge openings, fresh water or water of condensation from the engine being fed to said spiral shaped tubes. The fresh water or water of condensation which flows through these spiral shaped tubes is heated upon the first explosion to such a high temperature, that it is transformed into steam upon the evaporating cup which is also strongly heated, said steam being instantaneously ad mixed with the explosive gases by the suction effect of said gases.

Figure 1 of the accompanying drawing shows in a diagrammatical sectional view one form of construction of the gas-steam generator,

Fig. 2 is a sectional View on the line 2-2 of Fig. 1, and c Fig. 3 is a perspective view of the steam chamber, a part of the chamber being broken away.

The apparatus consists essentially of an explosion chamber 1 for the production of a gas jet, and of a steam chamber 2. The explosive mixture of air and gas is supplied under pressure to the explosion chamber 1 by the usual means through an inlet valve 3. A sparking plug or similar igniting device 4 serves for the ignition. The residues are exhausted from the combustion chamber through an outlet valve 5. The explosion chamber is held closed up to the ignition by a disk valve 6, the rod 7 of which is controlled by a pressure spring 8 arranged on the outside of the chamber 1, said spring being of such a strength that the valve will not be opened by the charging pressure. The stroke of the valve 6 takes place in a nozzle tube 9 which extends into a nozzle tube 10 of the steam chamber 2. These two nozzle tubes form an injector;

The steam chamber is supplied with steam from any suitable source. In the form of construction, shown by way of example, however the cooling water jacket 11 of the explosion chamber 1 is used as steam generator. l/Vith this object in view the jacket 11 has a steam dome 12, which is connected to the steam chamber 2 by means of a pipe 13. In this pipe'18 a check valve 14: is arranged. A tubular socket 15 serves to replace in the j acket 11 the'water which has been evaporated. In order to evaporate instantaneously water which might have been carried over into the steam chamber 2 the steam pipe 13 is connected with a ring-shaped steam tube 16 which has tubular outlets 17 downwardly directed towards a vaporizing plate 18 which is arranged under the ring-shaped tube 16 and which is fixed on a vertical bracket 19' carried by the nozzle 10. The bracket 19 consists of metal having heat conductive properties so that the burnt gases from the nozzle 10' will heat the plate 18 in order that the steam from the openings 24 will be more efiectively vaporized.

Around the nozzles 9 and 10 tubes 20, 21 of a material which is a good conductor of heat, for instance copper, are wound in spiral ing of steam already beginning at the first 27 being arranged in said pipe.

chamber 126; the supply pipe for the engine 'is, connected,

explosion shock;

To the ini'xingnozzle 10 a pipe 25is connected,,which ends in an accumulating and pressure equalizing chamber 26, a check valve To the Any approved means may be employed for actuating the valves 3 and 5 and for timing the spark of the plug 4, and for also, supplying the combustion, chamber 1 with a mixture of fuel andfair. The means as. shown includes a motorp which drives the shaft 6 in order that the cam e thereon will actuate the stem of the valve 3. This shaft has thereon a beveled ear d meshing with the gear d on the vertical shaft b, the latter shaft being provided with an eccentric e for controlling the movement of the valve 5 and likewise the distributor h for timing the spark of the plug t. While the means above described a preferable, it will of course be understoo i that other conventional means maybe utilized if desired,for instance, the construction in the patent to Hess, No. 582,351, May -11th,1897;,m ay be adapted with slight modificat ons for this purpose.

Fuel is injected into the air pipe 0 through pipe'rt, the entrance ofthe fuel into the chamber 1 being controlled by the valve. 3, as cus em ryr I The valve. 6 serves to retain the steam gas mixture within the explosion chamberl until the sameisignited; It is obviousthat the valve 6 will be, opened by the high pressure within the explosion chamber, such, pressure overcoming the resistance of the spring: 8, and by thismeanspermits the passage of the gases from theexplosion chamber 1 through the opening 2. The valve. 6 remains open until almost the entire quantity of the burnt gases have passed out of the explosion chanr ber andhave passed through the nozzle 10 in a direction toward the collecting vessel 26, mixing with steam in the chamber 2. As soon as the fo'rceof the. explosion has come to an end, thespring .8 causes the valve 6 to close the opening 2'.

Theap aratus operates as follows:To the explosion chamber 1 an explosive gas-air mixture is supplied through the valve 3 with the aid of achargepump (not shown), said mixture being ignited by the sparking plug 4. The increaseof pressure due to the explosion, opens. the: valve 6. and the gases from ex.- plosion rush through the injector nozzle 9 into the suction nozzle 10 of the steam cham her 2, causing at the same time a rapid heating of the two nozzles 9 and 10 as well as of the serpentine tubes 20, 21 closely surrounding said nozzles. The fresh water or water of condensation which flows through these serpentine tubes consequently is transformed into steam which, flowing out through the discharging openings 24 of the tube 23,

strikes onto the evaporating cup18, which in the meantime has also been strongly heated, so that the evaporating process is effectively completed if this should yet be necessary.

The cup-shaped vaporizing plate 18 is rigidly connected by the bracket 19" to the'highly heated mixing nozzlelO and is also highly heated by direct conduction of heat. I

The pipe 22 leading to the steam generator 20, 21 1s cutoff as soon as the jacket 11 is ableto produce suflicient steam.

The steam generated in this manner immediately enters the steam chamber 2, but is carried along by the suction eflect of the gases from explosion flowing through the nozzles?) and 10, so that a homogenous mixture of steam and gas is produced, a complete equalization of temperature between both these media taking place. In the manner which has justbeen described a sufficient.

quantity of steam is already generated during the first explosion shock,,this steam being admixed immediately with the gases from explosion. I The valve 6 remains open until the. gases from explosion have expanded to the charging pressure. As soon as the valve has closed again the exhaust valve 5 opens in order that the explosion chamber be freed from residue gases and ready to receive a new charge;

The proceeding which has just been described is repeated until the Water jacket 11 which surrounds the explosion chamber 1 has'been sufliciently heated to supply contin uously the quantityiof steam which is necessary for the production of the gas-steam. Owing to'the high temperature of the gases from explosion, the steam which is generated in the'serpentine tubes 20, 21 min the water jacket 11*is so strongly heated and the tem perature of the mixture is at the same time.

lowered so much that it can no more exert any prejudicial action upon the engine. The pressure increase occurring in the steam chamber 2 cannot back up in the steam dome l2'owing'to the check valve 14. The mixture of gases from explosion and steam flows through the'pipe 25 into the accumulator chamber 26, in which the fluctuacertained the nature of my said invention, I declare that What I claim is A gas steam generator comprising an explosion chamber, means for supplying fuel to said chamber, means for igniting the fuel, a water jacket surrounding said explosion chamber, a steam dome thereon, a steam chamber, an injector in said steam chamber communicating with said explosion chamber, a normally closed valve cooperative with said injector adapted to be opened by the pressure of the ignited gases, conduit means communicating said steam dome with said steam chamber, a check valve in said conduit, a plurality of spirally wound tubes around the nozzles of said injector, means for supplying the tubes with water, a vaporizing plate supported in the steam chamber, a tube having discharge openings disposed above said plate and communicating with said spirally wound tubes, a discharge tube in said steam chamber disposed above said plate communicating with the conduit means of said steam dome, and outlet means in said steam chamber having a check valve associated therewith.

In testimony whereof I have hereunto set my hand.

HERMANN RIESS. 

